There's going to be a movie based on a novel called "Steelheart", about a world where the super powered people are all villains and conquer the world, and a resistance movement of un-powered humans has to find their weaknesses and stop them.

They retooled the show, and started all over again. It looks like the old trailer, except now there's the replacement Firestorm, and Hawkman as well as Hawkgirl are in it, and Vandal Savage is the villain.

Supergirl might crossover with The Flash.It was dependent on if they ordered the full season for Supergirl, and they just did.

Also, the Constantine/Arrow crossover has been on. It was nothing to write home about, but now that Constantine is introduced into the CW-verse, plans are in place that he'll be a full cast member of "Legends Of Tomorrow", but only if it gets a second season.